Display Test - Toshiba T200 User Manual

3.7

Display Test

To execute the Display Test, select 4 from the DIAGNOSTIC TESTS menu and tap or press
Enter . Eleven subtests test the display in various modes. Select a subtest and tap or press
Enter .
NOTE: In the Display Test, the screen does not display "Break" or "Enter." Tap
the upper right corner of the screen to enter "Break" or the lower right corner to enter
"Enter."
Subtest 01 VRAM Read/Write
This subtest writes constant data FFFFh, AAAAh, 5555h, 0000h and address
data to video RAM (1MB). (CGA (B8000H ~ BFFFFH: 32KB) and VGA
(A0000H ~ AFFFFH:64KB*4*4)). This data is then read from the video
RAM and compared to original data.
Subtest 02 Character Attributes (mode 1, 13h)
This subtest displays four character attribute modes; normal, intensified,
reverse, and blinking. The character attribute modes display foreground and
intensified color (16 colors or 16-level gray scale) using black, blue, red,
magenta, green, cyan, yellow, and white from the color display. The following
display appears when the subtest is executed.
CHARACTER ATTRIBUTES
NEXT LINE SHOWS NORMAL DISPLAY.
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
NEXT LINE SHOWS INTENSIFIED DISPLAY.
IIIIIIIIIIIIIIIIIIIIIIIIIIIIII
NEXT LINE SHOWS REVERSE DISPLAY.
R RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR
NEXT LINE SHOWS BLINKING DISPLAY
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
PRESS [Enter] KEY
T200, T200CS
RRR
00 08 ; BLACK
01 09 ; BLUE
04 0C ; RED
05 0D ; MAGENTA
02 0A ; GREEN
03 0B ; CYAN
06 0E ; YELLOW
07 0F ; WHITE
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